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  1. Does a Scale Measure Our Weight or Mass? • Physics Forums

    Feb 17, 2008 · Since on the Earth's surface weight and mass are proportional, for everyday usage it doesn't matter which units you use. You can say that you "weigh" 70kg or 686 N (not 70 N!). …

  2. Pounds is a unit of mass or weight - Physics Forums

    Sep 28, 2008 · The unit of mass in the USA system is the seldom used 'slug', which weighs 32 pounds (lbs) on Earth. A net force of 1 pound (lb) will give an object with a mass of 1 slug, an …

  3. Is Mass Measured in Kilograms or Grams? - Physics Forums

    Mar 20, 2010 · m=F/a then is mass measured in kg or g. Thanks You need compatable units. If force is given in Newtons, acceleration should usually be given in meters per second squared. …

  4. Mass and Weight - which do scales show? - Physics Forums

    Aug 21, 2011 · Scales primarily measure weight, which is the force exerted by gravity on an object, but they are often calibrated to display mass under Earth's gravity. This means that …

  5. Spring Balance: Mass or Weight? Clearing Out Confusion

    Dec 2, 2010 · Of course, a counter balance measures mass, so the system was (and still is, if you look only at the pound reading) inconsistent. And, as you see, a simple spring system may …

  6. Grams vs. Newtons: Why Do I See Weights Measured in Grams?

    Dec 20, 2018 · The discussion clarifies the distinction between mass and weight, noting that grams measure mass while Newtons measure weight, which is the force exerted by gravity on …

  7. Why is dry mass used to measure growth? - Answers

    Aug 20, 2025 · Dry mass is used to measure growth because it provides a more accurate representation of an organism's biomass by removing the influence of water content, which …

  8. Calculate Mass From Weight: Easy Conversion Guide

    Aug 30, 2009 · To calculate mass from weight, use the formula m = F/g, where F is weight in Newtons and g is the acceleration due to gravity (approximately 9.81 m/s² on Earth). A person …

  9. Why can lb's be considered a mass and a force? - Physics Forums

    Nov 12, 2011 · So the car has a mass of 3000lb, but then they measure the force applied also in pounds. Unlike SI units where forces are always measured in N and mass in kg.

  10. Can mass be measured directly in the absence of gravity?

    Aug 24, 2008 · Measuring an object's mass in the absence of gravity is possible through methods that rely on oscillations and inertial properties. Techniques such as using a spring to observe …